Four-way ruler



FIG. 1 is a left side, front and top elevational view of the four-way ruler embodying my new design shown in a condition of use;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a rear elevational view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a four-way ruler, as shown and described. 